MADISON, WI-July 23, 2002 - NimbleGen Systems, Inc., a closely held genomics technology company, announced today the launch of the Company's customized DNA microarray services, accessible through its website, www.nimblegen.com.

"This is the next step in NimbleGen's first phase of commercialization, which immediately expands our potential relationships with academic, biotechnology and pharmaceutical customers," commented Mike Treble, President and CEO of NimbleGen. "NimbleGen's microarray service is the logical complement to our recently announced genomics production and service facility." NimbleGen Systems of Iceland, LLC- utibu a Islandi (NGS-I) located in Reykjavik, Iceland, began manufacturing custom DNA arrays and offering related services in March 2002.

"With the addition of NimbleGen's customized DNA microarray design services, we have greatly enhanced our capability to produce high-quality, high density custom DNA arrays and related services, faster and more economically than our competitors for customers worldwide," commented David Cooper, MD, Ph.D., Sr. Vice President and Chief Medical Officer.

"NimbleGen now has the unique ability to support development of all phases of DNA microarray technology for academic and corporate partners involved in gene expression studies," said Steven Smith, Vice President of Bioinformatics. "In addition, the Company is able to offer customers assistance in the selection and placement of unique gene sequences from their organism of choice and integrate their unique array design into our array production process.

NimbleGen Systems, Inc., develops next generation DNA array technologies that shorten the time it takes to produce arrays from months to hours. NimbleGen's Maskless Array Synthesis (MAS) technology permits the Company to develop and manufacture custom high density, highly reproducible DNA arrays, which substantially improve the quality and data yield of DNA chips. Using flexible digital micromirrors, the MAS system can create a wide variety of designs and sizes based on each customer's needs quickly and efficiently. Users are enabled to create their own high density, custom designed DNA arrays in their laboratories, greatly accelerating the rate of scientific research and discovery. The Company's core business strategy is to supply both custom DNA arrays and the systems that manufacture DNA arrays for academic, biotechnology and pharmaceutical customers.